The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 17FP237 # Created Fri Nov 22 02:10:54 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.01y # First observation: 2016/01/15 # Last observation: 2018/01/17 Preliminary a, adot, b, bdot, g, gdot: 0.000009 0.021975 -0.000003 -0.010260 0.024351 0.000000 # Chi-squared of fit: 17.09 DOF: 52 RMS: 0.14 # Min/Max residuals: -0.37 0.29 # Exact a, adot, b, bdot, g, gdot: 1.391129E-05 2.191038E-02 -6.245868E-06 -1.023222E-02 2.427466E-02 -6.545027E-04 # Covariance matrix: 6.5445E-13 -8.6708E-13 -1.4190E-13 2.9466E-13 -3.4255E-13 -1.2102E-11 -8.6708E-13 2.1200E-12 4.6283E-13 -9.4746E-13 1.5529E-12 3.8864E-11 -1.4190E-13 4.6283E-13 4.7054E-13 -4.7321E-13 3.8613E-13 9.3764E-12 2.9466E-13 -9.4746E-13 -4.7321E-13 6.6153E-13 -7.8339E-13 -1.9174E-11 -3.4255E-13 1.5529E-12 3.8613E-13 -7.8339E-13 1.5206E-12 3.2107E-11 -1.2102E-11 3.8864E-11 9.3764E-12 -1.9174E-11 3.2107E-11 7.8642E-10 # lat0 lon0 xBary yBary zBary JD0 -10.138862 151.295350 0.590160 -0.138314 -0.774468 2457403.107160 # Heliocentric elements and errors Epoch: 2457400.5000 = 2016/01/13 Mean Anomaly: 327.74384 +/- 0.642 Argument of Peri: 239.57333 +/- 0.770 Long of Asc Node: 310.26500 +/- 0.001 Inclination: 26.91001 +/- 0.001 Eccentricity: 0.07377854 +/- 0.0007 Semi-Major Axis: 44.68878570 +/- 0.0074 Time of Perihelion: 2467177.5172 +/- 194.4 Perihelion: 41.39171244 +/- 0.0332 Aphelion: 47.98585895 +/- 0.0334 Period (y) 298.7487 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.97895151 +/- 0.0018 Ecliptic Y 20.37033490 +/- 0.0010 Ecliptic Z -7.25204876 +/- 0.0004 Ecliptic XDOT -0.00094568 +/- 0.0000 Ecliptic YDOT -0.00230691 +/- 0.0000 Ecliptic ZDOT -0.00112302 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.97651376 +/- 0.0016 Geocenter to KBO 41.19522182 +/- 0.0021 # Hcoef: 9.05
The following table shows the complete astrometric record for 17FP237. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (17FP237) followed by the observatory code and reference code for the source of the astrometry.
2016 01 15.606371 09 58 56.71 +01 31 18.7 17FP237 T09 C~83FC 2016 01 15.656523 09 58 56.51 +01 31 19.3 17FP237 T09 C~83FC 2017 01 23.36852 10 02 15.78 +00 32 58.2 25.5r 17FP237 T09 C~81C6 2017 01 23.42951 10 02 15.53 +00 32 59.0 25.5r 17FP237 T09 C~81C6 2017 01 23.44815 10 02 15.45 +00 32 59.0 25.2r 17FP237 T09 C~81C6 2017 01 23.52648 10 02 15.09 +00 32 59.8 24.8i 17FP237 T09 C~81C6 2017 02 02.38198 10 01 30.74 +00 34 58.7 25.1r 17FP237 T09 C~81C6 2017 02 02.56579 10 01 29.87 +00 35 01.4 25.2i 17FP237 T09 C~81C6 2017 02 02.58245 10 01 29.80 +00 35 01.6 24.7i 17FP237 T09 C~81C6 2017 02 02.58520 10 01 29.77 +00 35 01.7 25.0i 17FP237 T09 C~81C6 2017 03 22.24805 09 57 50.66 +00 51 49.4 25.7g 17FP237 T09 C~81C6 2017 03 22.28382 09 57 50.49 +00 51 50.2 25.8g 17FP237 T09 C~81C6 2017 03 22.29763 09 57 50.45 +00 51 50.4 26.0g 17FP237 T09 C~81C6 2017 03 22.31149 09 57 50.38 +00 51 50.7 25.4g 17FP237 T09 C~81C6 2017 03 22.34583 09 57 50.24 +00 51 51.6 25.9g 17FP237 T09 C~81C6 2017 03 22.39100 09 57 50.06 +00 51 52.7 25.1z 17FP237 T09 C~81C6 2017 03 22.44235 09 57 49.86 +00 51 54.3 25.5z 17FP237 T09 C~81C6 2017 03 22.46802 09 57 49.75 +00 51 54.4 24.8z 17FP237 T09 C~81C6 2017 03 25.24634 09 57 39.21 +00 53 01.4 25.3r 17FP237 T09 C~81C6 2017 03 25.26003 09 57 39.17 +00 53 01.8 25.9r 17FP237 T09 C~81C6 2017 03 25.27375 09 57 39.12 +00 53 01.9 25.3r 17FP237 T09 C~81C6 2017 03 25.28747 09 57 39.05 +00 53 02.5 25.0r 17FP237 T09 C~81C6 2018 01 17.45108 10 06 35.75 -00 27 22.7 24.7i 17FP237 T09 C~83FC 2018 01 17.47263 10 06 35.66 -00 27 22.4 25.0i 17FP237 T09 C~83FC 2018 01 17.50222 10 06 35.54 -00 27 22.2 24.5i 17FP237 T09 C~83FC 2018 01 17.53998 10 06 35.38 -00 27 22.0 25.3i 17FP237 T09 C~83FC 2018 01 17.56419 10 06 35.28 -00 27 21.9 25.4i 17FP237 T09 C~83FC 2018 01 17.56687 10 06 35.27 -00 27 21.9 24.8i 17FP237 T09 C~83FC 2018 01 17.59100 10 06 35.18 -00 27 21.9 24.6i 17FP237 T09 C~83FC
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.07 0.00 -0.09
2 0.0001 -3.02 -0.00 -0.48 0.20
3 1.0233 4020.52 -0.21 -2238.14 -0.16
4 1.0235 4016.73 -0.04 -2238.70 0.13
5 1.0235 4015.60 0.05 -2239.12 -0.03
6 1.0237 4010.26 -0.18 -2240.26 -0.07
7 1.0507 3345.17 0.07 -2361.13 0.08
8 1.0512 3331.99 0.06 -2363.16 0.14
9 1.0513 3330.94 0.20 -2363.33 0.15
10 1.0513 3330.48 -0.06 -2363.40 0.12
11 1.1818 -101.46 0.29 -2566.15 0.10
12 1.1819 -104.13 -0.09 -2566.29 -0.10
13 1.1819 -104.76 0.17 -2566.31 -0.15
14 1.1819 -105.85 -0.03 -2566.40 -0.26
15 1.1820 -108.13 -0.10 -2566.28 -0.21
16 1.1822 -111.05 -0.12 -2566.20 -0.20
17 1.1823 -114.42 -0.20 -2565.74 0.16
18 1.1824 -116.00 -0.14 -2566.23 -0.37
19 1.1900 -287.54 -0.03 -2558.59 0.05
20 1.1900 -288.24 0.11 -2558.43 0.18
21 1.1901 -288.98 0.22 -2558.59 -0.02
22 1.1901 -290.17 -0.13 -2558.40 0.14
23 2.0064 8945.45 0.14 -4271.66 -0.07
24 2.0065 8944.07 0.04 -4271.85 0.09
25 2.0066 8942.31 0.02 -4272.29 0.12
26 2.0067 8939.99 -0.07 -4272.94 0.08
27 2.0067 8938.55 -0.08 -4273.37 0.03
28 2.0067 8938.41 -0.07 -4273.42 0.02
29 2.0068 8937.14 0.09 -4273.89 -0.06
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
17FP237 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.404 44.418 44.390 ecceobj 0.066 0.067 0.065 incobj 26.961 26.961 26.961 qmin 40.846 40.795 40.845 qmax 48.282 48.381 48.273 amean 44.462 44.477 44.446 amin 44.114 44.131 44.109 amax 44.825 44.832 44.812 emean 0.067 0.067 0.066 emin 0.056 0.056 0.055 emax 0.078 0.079 0.077 imean 28.406 28.407 28.404 imin 28.137 28.145 28.141 imax 28.647 28.647 28.647 excite_mean 0.480 0.480 0.480 fracstop 1.000 1.000 1.000 cjmean 2.809 2.809 2.809 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 195.9 193.9 196.4 kozaiamp 180.0 180.0 180.0